I saw this on Facebook this morning. An Acadian wth a Corvair roof and "Impala Inspired" quarter panel bulge. It appears the quarter panel is one from a Corvair as well.
I think it's a Nova with pieces of Corvair grafted on to make it look like a bubble top.
Could be the other way around (Corvair with Nova rear), but the rear end housing lying under it makes me think it's a front engine - rear drive, and I'm thinking that would be easier if the base was the Nova.
Here's a thumbnail I found of a similar one under construction. It looks like the top half of the rear quarters came with the roof. The Nova and the Corvair must have very similar dimensions...
I like the look of it. It'd be great to see some more photos.
Yeah, the lower quarter and door lines are definitely ChevyII/Acadian, not Corvair, which would lead me to think that it's a grafting as shown above in 66 Beau's post - in fact maybe they are the same car? I can't imagine there being more than one project like that out there...
I think this custom version looks great; even nicer than the original. Of course the 65-69 Corvair Monza 2 dr ht was quite a nice looking package, especially the roofline, so it's not a surprise that it adapts well to a similarly sized GM compact. .